September weather forecastChattahoochee, FL
September
Weather in September
The first month of the autumn, September, is still a hot month in Chattahoochee, Florida, with an average temperature fluctuating between 69.6°F (20.9°C) and 87.3°F (30.7°C).Temperature
September begins with an average high-temperature of a still hot 87.3°F (30.7°C), reflecting close similarity to the preceding month. In the month of September, Chattahoochee records a consistent average low-temperature of 69.6°F (20.9°C).Heat index
The heat index value for September is calculated to be a sweltering 102.2°F (39°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
August, September and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Chattahoochee, Florida, during September, the rain falls for 18.8 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Chattahoochee, during the entire year, the rain falls for 182.5 days and collects up to 36.97" (939mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:16 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:25 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chattahoochee, FL
- Average high temperature in September: 87.3°F
The warmest months (with the highest average high temperature) are July and August (90.3°F).
The month with the lowest average high temperature is January (59.7°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).
Average pressure in September
Chattahoochee, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Chattahoochee, FL
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Chattahoochee, FL
- Average humidity in September: 77%
The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Chattahoochee, FL
- Average rainfall in September: 3.15"
The wettest month (with the highest rainfall) is August (5.28").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in September
Chattahoochee, FL
- Average rainfall days in September: 18.8 days
The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
Chattahoochee, FL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Chattahoochee, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Chattahoochee, FL
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 36min
The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in September
Chattahoochee, FL
- Average sunshine days in September: 9.1 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (3.4 days).
Average UV index in September
Chattahoochee, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Chattahoochee, FL
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Chattahoochee, FL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
